Long D A
Southern Illinois University at Edwardsville.
Percept Mot Skills. 1994 Aug;79(1 Pt 2):411-7. doi: 10.2466/pms.1994.79.1.411.
The hypothesis tested in the present study was that subjects would report higher intensity of heat-pain sensation for the left hand than for the right given right-brain dominance for negative emotion and tactual sensitivity. Low, medium, and high temperatures (42 degrees, 45 degrees, and 48 degrees, respectively) were presented to 20 healthy subjects' left and right forearms, wrists, and backs of hands. Using a modified magnitude-estimation scale, subjects rated the intensity of "heat-discomfort" that they felt following each 5-sec. stimulus presentation. Mean magnitude estimations for the left- and right-hand responses to high, medium, and low heat were analyzed using a 2 x 3 totally within-subjects analysis of variance. No significant differences between the right and left hands were observed for intensity of pain perception.
本研究中所检验的假设是，鉴于右脑在负性情绪和触觉敏感性方面占主导地位，受试者对左手热痛觉的强度报告将高于右手。分别以低温、中温、高温（分别为42摄氏度、45摄氏度和48摄氏度）刺激20名健康受试者的左右前臂、手腕及手背部。受试者使用改良的数量估计量表，对每次5秒刺激呈现后所感受到的“热不适”强度进行评分。采用2×3完全被试内方差分析，对左右手对高、中、低热度的反应的平均数量估计值进行分析。在疼痛感知强度方面，未观察到左右手之间存在显著差异。
